Low-voltage complete equipment lifting test device

Abstract

The utility model provides a low-voltage complete equipment lifting test device, which relates to the technical field of lifting devices and comprises a steel support, a running guide rail and a moving plate, the running guide rail is arranged in the middle of the upper end in the steel support, guide grooves are arranged on two sides of the running guide rail, a lifting appliance is arranged at the bottom of the moving plate, and the lifting appliance is connected with the steel support. Supporting legs are arranged at the four corners of the top of the moving plate, and moving wheels are rotationally arranged on the inner sides of the supporting legs. According to the utility model, the steel support is used as an integral support, the lifting appliance is connected with the low-voltage complete equipment to carry out a lifting test, the moving wheels on the supporting legs rotate to walk along the guide grooves, so that the moving plate moves to drive the low-voltage complete equipment to carry out a moving test, and before the moving test, the first screw rod and the second screw rod rotate to drive the low-voltage complete equipment to move. The two sets of sliding blocks are driven to move independently, the distance between the two sets of sliding blocks is changed, after the movable plate moves in place, the movable wheels are blocked through the check blocks, inertia is buffered, errors are reduced, and the test accuracy is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting devices, in particular to a lifting test device for a low-voltage complete set of equipment. Background Art

[0002] Low-voltage switchgear is a set of electrical equipment used in power systems, especially in distribution systems, for distributing and controlling electric energy. It consists of one or more low-voltage switch devices and related control, measurement, signal, protection, regulation and other equipment, as well as all internal electrical and mechanical connections and structural components. These devices are usually installed in power distribution rooms, substations, industrial plants, commercial buildings and other places in power systems. They are used to receive electric energy from power transformers, distribute it to each feeder circuit after passing through the system bus, and provide electric energy to the lower-level system according to power supply requirements. In addition, low-voltage switchgear also has a variety of protection and control functions, such as overload protection, short-circuit protection, undervoltage protection, etc., which can effectively protect the safety of circuits and equipment;

[0003] Before the low-voltage switchgear is put into operation, a number of tests are required, and the lifting test is one of them. Specifically, the maximum number of cabinet units, components and / or weights allowed by the initial manufacturer are assembled together, and the mass reaches 1.25 times the maximum transport mass. The transport unit is lifted vertically and steadily from the static position without impact to a height greater than or equal to 1m, and then slowly returned to the static position in the same way. This test is repeated twice, and then the transport unit is lifted off the ground without any movement and suspended for 30 minutes. According to the above test and using the same transport unit, the transport unit should be lifted vertically and steadily from the static position without impact to a height greater than or equal to 1m, and moved horizontally ( 10±0.5)m, and then put it back to the static position, and carry out three tests at the same speed in this order, each test time is within 1min. After the test, the test weight should be in place, and the transport unit has no visible cracks or permanent deformation through normal vision or corrected vision without additional magnification equipment, and its performance is not damaged; in the prior art, cranes and other equipment are generally used for lifting, and a running trolley is set on the lifting equipment for horizontal movement of (10±0.5)m. Due to the inertia of the movement of the rollers of the running trolley, it is not easy to accurately control the moving distance, so a range of addition and subtraction is generally left, but this affects the accuracy of the test to a certain extent. Therefore, the utility model proposes a low-voltage complete equipment lifting test device to solve the problems existing in the prior art. Utility Model Content

[0004] In view of the above problems, the utility model proposes a low-voltage complete equipment lifting test device. After the moving plate is moved into place, the low-voltage complete equipment lifting test device blocks the moving wheels through a block to buffer inertia, reduce errors, and improve the accuracy of the test.

[0005] To achieve the purpose of the utility model, the utility model is implemented by the following technical solutions: a low-voltage complete equipment lifting test device, including a steel support, a running guide rail and a moving plate, the running guide rail is arranged at the middle position of the upper end of the steel support, guide grooves are arranged on both sides of the running guide rail, a hanger is arranged at the bottom of the moving plate, legs are arranged at the four corners of the top of the moving plate, and moving wheels are rotatably arranged on the inner side of the legs, the moving wheels are driven to rotate by a motor, and the moving wheels are adapted to the guide grooves;

[0006] An inner groove is provided inside the running guide rail, and a first screw rod and a second screw rod are rotatably provided inside the inner groove. Slide blocks are movably provided at both ends of the inner groove, and one group of the slide blocks is movably adapted to the first screw rod and the thread of the second screw rod, and the other group of the slide blocks is adapted to the thread of the first screw rod and the movably adapted to the second screw rod, and blocks are provided on both sides of the slide blocks.

[0007] A further improvement is that motors are provided on both sides of one end of the running guide rail, and the output ends of the two groups of motors are connected to the first screw rod and the second screw rod respectively.

[0008] A further improvement is that: the interior of the two groups of sliders are provided with nut sleeves and through grooves, one group of sliders is movably adapted to the first screw rod through the through groove and is threadably adapted to the second screw rod through the nut sleeve, and the other group of sliders is threadably adapted to the first screw rod through the nut sleeve and is movably adapted to the second screw rod through the through groove.

[0009] A further improvement is that the stopper is integrally formed with the sliding block, and a buffer pad is provided on one side of the stopper close to the moving plate.

[0010] A further improvement is that the hoist includes a first hoist, a pulley block and a hook, the first hoist is arranged at the bottom of the movable plate, and the sling of the first hoist passes around the pulley block, and the hook is arranged at the lower end of the pulley block.

[0011] A further improvement is that the steel bracket includes a bracket body and a connecting rod, the bracket body is provided with at least three groups, and connecting rods are connected to both sides of the upper ends of two adjacent groups of bracket bodies, bases are provided on both sides of the bottom of the bracket body, and fixing holes are provided on the bases, and the fixing holes are fixed to the ground by bolts.

[0012] A further improvement is that a second hoist is provided at a middle position above one end of each of the three groups of bracket bodies, and a sling of the second hoist is connected to the running guide rail.

[0013] The beneficial effects of the utility model are:

[0014] 1. The utility model uses a steel bracket as an integral support, connects the low-voltage complete set of equipment through a sling to perform a lifting test, and moves along the guide groove by rotating the moving wheels on the legs, so that the moving plate moves to drive the low-voltage complete set of equipment to perform a mobile test. Before the mobile test, the first screw rod and the second screw rod are rotated to drive the two sets of sliders to move separately, and the spacing between the two sets of sliders is changed. After the moving plate moves into place, the moving wheel is blocked by a block to buffer inertia, reduce errors, and improve the accuracy of the test;

[0015] 2. The utility model can raise or lower the running guide rail through the second winch, which is convenient for lowering the running guide rail to maintain and repair the components on it, and is more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is the front view of the utility model;

[0017] Figure 2 It is a schematic diagram of the running guide rail of the utility model;

[0018] Figure 3 For the utility model Figure 2 Schematic diagram of the structure at A in the middle;

[0019] Figure 4 It is a schematic diagram of a slider and a stopper of the utility model.

[0020] Among them: 1. running guide rail; 2. moving plate; 3. guide groove; 4. support leg; 5. moving wheel; 6. inner groove; 7. first screw rod; 8. second screw rod; 9. slider; 10. block; 11. motor; 12. nut sleeve; 13. through groove; 14. first winch; 15. pulley block; 16. hook; 17. bracket body; 18. connecting rod; 19. base; 20. second winch. DETAILED DESCRIPTION

[0021] To facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0022] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed", "provided with", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] It should be noted that the structures not introduced in the present invention do not involve the design points and improvement directions of the present invention, and all adopt the existing technology. At the same time, the content of the above background technology belongs to the technical cognition scope of the utility model inventor. Since the technical content in this field is vast and too complicated, the above content of this application does not necessarily constitute the prior art. Example 1

[0024] according to Figure 1 , 2 As shown in , 3 and 4, this embodiment proposes a low-voltage complete equipment lifting test device, including a steel support, a running guide rail 1 and a moving plate 2, wherein the running guide rail 1 is arranged at the middle position of the upper end of the steel support, and guide grooves 3 are arranged on both sides of the running guide rail 1, and a hanger is arranged at the bottom of the moving plate 2, and legs 4 are arranged at the four corners of the top of the moving plate 2, and moving wheels 5 are rotatably arranged on the inner side of the legs 4, and the moving wheels 5 are driven to rotate by a motor, and the moving wheels 5 are adapted to the guide grooves 3;

[0025] The running guide rail 1 is provided with an inner groove 6, and the inner groove 6 is provided with a first screw rod 7 and a second screw rod 8 for rotation. Both ends of the inner groove 6 are provided with sliders 9, and one group of the sliders 9 is movably adapted to the first screw rod 7 and threadedly adapted to the second screw rod 8, and the other group of the sliders 9 is threadedly adapted to the first screw rod 7 and movably adapted to the second screw rod 8. Both sides of the sliders 9 are provided with stoppers 10. When in use, the steel bracket is used as an integral support, and the low-voltage complete set of equipment is connected through a sling for lifting test. The moving wheel 5 on the leg 4 rotates and walks along the guide groove 3, so that the moving plate 2 moves and drives the low-voltage complete set of equipment for mobile test. Before the mobile test, the first screw rod 7 and the second screw rod 8 are rotated to drive the two groups of sliders 9 to move separately. According to the predetermined distance requirements, the spacing between the two groups of sliders 9 is changed. After the moving plate 2 moves into place, the moving wheel 5 is blocked by the stopper 10 to buffer the inertia, reduce the error, and improve the accuracy of the test.

[0026] Wherein, motors 11 are provided on both sides of one end of the running guide rail 1, and the output ends of the two groups of motors 11 are respectively connected to the first screw rod 7 and the second screw rod 8. When in use, the first screw rod 7 and the second screw rod 8 are respectively driven to rotate by the two groups of motors 11.

[0027] Among them, the two groups of sliders 9 are both provided with nut sleeves 12 and through grooves 13 inside. One group of sliders 9 is movably adapted to the first screw rod 7 through the through grooves 13 and threadedly adapted to the second screw rod 8 through the nut sleeve 12, and the other group of sliders 9 is threadedly adapted to the first screw rod 7 through the nut sleeve 12 and movably adapted to the second screw rod 8 through the through grooves 13. Due to the effects of the nut sleeves 12 and the through grooves 13, the first screw rod 7 and the second screw rod 8 can drive the two groups of sliders 9 to operate separately, and the movement of the two groups of sliders 9 does not affect each other.

[0028] The stopper 10 is integrally formed with the slider 9, and a buffer pad is provided on the side of the stopper 10 close to the moving plate 2. After the moving plate 2 is moved into position, the stopper 10 blocks the moving wheel 5 to buffer inertia, reduce errors, and improve the accuracy of the test. The buffer pad softly contacts the moving wheel 5 to reduce wear.

[0029] The hoisting device includes a first hoist 14, a pulley block 15 and a hook 16. The first hoist 14 is arranged at the bottom of the movable plate 2, and the sling of the first hoist 14 passes around the pulley block 15. The hook 16 is arranged at the lower end of the pulley block 15. When in use, the low-voltage complete set of equipment is connected through the hook 16, and the first hoist 14 is operated, and the sling pulls the pulley block 15 and the hook 16 to perform a lifting test. Example 2

[0030] according to Figure 1 , 2 As shown in , 3 and 4, this embodiment proposes a low-voltage complete equipment lifting test device, including a steel support, a running guide rail 1 and a moving plate 2, wherein the running guide rail 1 is arranged at the middle position of the upper end of the steel support, and guide grooves 3 are arranged on both sides of the running guide rail 1, and a hanger is arranged at the bottom of the moving plate 2, and legs 4 are arranged at the four corners of the top of the moving plate 2, and moving wheels 5 are rotatably arranged on the inner side of the legs 4, and the moving wheels 5 are driven to rotate by a motor, and the moving wheels 5 are adapted to the guide grooves 3;

[0031] The running guide rail 1 is provided with an inner groove 6, and the inner groove 6 is provided with a first screw rod 7 and a second screw rod 8 for rotation. Both ends of the inner groove 6 are provided with sliders 9, and one group of the sliders 9 is movably adapted to the first screw rod 7 and threadedly adapted to the second screw rod 8, and the other group of the sliders 9 is threadedly adapted to the first screw rod 7 and movably adapted to the second screw rod 8. Both sides of the sliders 9 are provided with stoppers 10. When in use, the steel bracket is used as an integral support, and the low-voltage complete set of equipment is connected through a sling for lifting test. The moving wheel 5 on the leg 4 rotates and walks along the guide groove 3, so that the moving plate 2 moves and drives the low-voltage complete set of equipment for mobile test. Before the mobile test, the first screw rod 7 and the second screw rod 8 are rotated to drive the two groups of sliders 9 to move separately. According to the predetermined distance requirements, the spacing between the two groups of sliders 9 is changed. After the moving plate 2 moves into place, the moving wheel 5 is blocked by the stopper 10 to buffer the inertia, reduce the error, and improve the accuracy of the test.

[0032] The hoisting device includes a first hoist 14, a pulley block 15 and a hook 16. The first hoist 14 is arranged at the bottom of the movable plate 2, and the sling of the first hoist 14 passes around the pulley block 15. The hook 16 is arranged at the lower end of the pulley block 15. When in use, the low-voltage complete set of equipment is connected through the hook 16, and the first hoist 14 is operated, and the sling pulls the pulley block 15 and the hook 16 to perform a lifting test.

[0033] Among them, the steel bracket includes a bracket body 17 and a connecting rod 18. The bracket body 17 is provided with three groups, and connecting rods 18 are connected on both sides of the upper end between two adjacent groups of the bracket bodies 17 to improve stability. Bases 19 are provided on both sides of the bottom of the bracket body 17, and fixing holes are provided on the base 19. The fixing holes are fixed to the ground by bolts, and the base 19 is fixed to the ground to prevent tipping.

[0034] A second hoist 20 is provided at the middle position above one end of the three groups of bracket bodies 17, and the sling of the second hoist 20 is connected to the running guide rail 1. When in use, the running guide rail 1 can be raised or lowered by the second hoist 20, so that the running guide rail 1 can be lowered to maintain and repair the components on it, which is more convenient to use.

[0035] The low-voltage complete equipment lifting test device uses a steel bracket as an integral support, connects the low-voltage complete equipment through a sling for lifting test, and moves along the guide groove 3 by rotating the moving wheel 5 on the leg 4, so that the moving plate 2 moves to drive the low-voltage complete equipment to perform a mobile test. Before the mobile test, the first screw rod 7 and the second screw rod 8 are rotated to drive the two groups of sliders 9 to move separately, and the spacing between the two groups of sliders 9 is changed. After the moving plate 2 moves into place, the moving wheel 5 is blocked by the block 10 to buffer inertia, reduce errors, and improve the accuracy of the test. The running guide rail 1 can be raised or lowered by the second winch 20, which is convenient for lowering the running guide rail 1 to maintain and repair the components on it, making it more convenient to use.

[0036] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A low-voltage complete equipment lifting test device, comprising a steel support, a running guide rail (1) and a moving plate (2), characterized in that: The running guide rail (1) is arranged at the middle position of the upper end of the steel support, and guide grooves (3) are arranged on both sides of the running guide rail (1). A hanger is arranged at the bottom of the moving plate (2), and legs (4) are arranged at the four corners of the top of the moving plate (2). The inner side of the legs (4) is rotatably provided with moving wheels (5), and the moving wheels (5) are driven to rotate by a motor, and the moving wheels (5) are adapted to the guide grooves (3); An inner groove (6) is provided inside the running guide rail (1), and a first screw rod (7) and a second screw rod (8) are rotatably provided inside the inner groove (6). Slide blocks (9) are movably provided at both ends of the inner groove (6), and one group of the slide blocks (9) is movably adapted to the first screw rod (7) and threadedly adapted to the second screw rod (8), and another group of the slide blocks (9) is threadedly adapted to the first screw rod (7) and movably adapted to the second screw rod (8). Stop blocks (10) are provided on both sides of the slide blocks (9).

2. A low-voltage complete equipment lifting test device according to claim 1, characterized in that: Motors (11) are provided on both sides of one end of the running guide rail (1), and the output ends of the two groups of motors (11) are respectively connected to the first screw rod (7) and the second screw rod (8).

3. A low-voltage complete equipment lifting test device according to claim 1, characterized in that: The two groups of sliders (9) are both provided with nut sleeves (12) and through grooves (13) inside. One group of sliders (9) is movably matched with the first screw rod (7) through the through grooves (13) and is thread-matched with the second screw rod (8) through the nut sleeve (12). The other group of sliders (9) is thread-matched with the first screw rod (7) through the nut sleeve (12) and is movably matched with the second screw rod (8) through the through grooves (13).

4. A low-voltage complete equipment lifting test device according to claim 3, characterized in that: The stopper (10) and the sliding block (9) are integrally formed, and a buffer pad is provided on a side of the stopper (10) close to the movable plate (2).

5. A low-voltage complete equipment lifting test device according to claim 1, characterized in that: The lifting device comprises a first hoist (14), a pulley block (15) and a hook (16); the first hoist (14) is arranged at the bottom of the movable plate (2), and a sling of the first hoist (14) passes around the pulley block (15); and the hook (16) is arranged at the lower end of the pulley block (15).

6. A low-voltage complete equipment lifting test device according to claim 1, characterized in that: The steel bracket comprises a bracket body (17) and a connecting rod (18), wherein at least three groups of the bracket bodies (17) are provided, and connecting rods (18) are connected to both sides of the upper ends of two adjacent groups of the bracket bodies (17), and bases (19) are provided on both sides of the bottom of the bracket body (17), and fixing holes are provided on the bases (19), and the fixing holes are fixed to the ground by bolts.

7. A low-voltage complete equipment lifting test device according to claim 6, characterized in that: A second hoist (20) is provided at a middle position above one end of each of the three groups of bracket bodies (17), and a sling of the second hoist (20) is connected to the running guide rail (1).

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